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Table 4 Results the univariate and multivariate Cox proportional hazard models of independent predictors of mortality

From: High-resolution CT scoring system-based grading scale predicts the clinical outcomes in patients with idiopathic pulmonary fibrosis

Univariate Cox proportional hazard model

Variable

p-value

HR (95% Cl)

Age

0.219

1.023 (0.985 to 1.062)

BMI

0.292

0.937 (0.829 to 1.058)

PaO2

0.193

0.982 (0.955 to 1.009)

%FVC

0.002

0.968 (0.948 to 0.989)

KL-6

0.028

1.000 (1.000 to 1.001)

MMRC score

0.013

1.659 (1.111 to 2.478)

HRCT score

0.268

1.007 (0.995 to 1.019)

Multivariate Cox proportional hazard model

%FVC

0.037

0.972 (0.958 to 0.986)

KL-6

0.100

1.000 (1.000 to 1.001)

MMRC score

0.043

1.240 (1.005 to 2.475)

  1. BMI = body mass index, FVC = forced vital capacity, KL-6 = Krebs von den Lungen-6, MMRC = modified medical research council.